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Why have the major engine manufacturers not installed the NTZ filter system as the engine is manufactured?

April 26, 2017engine filter installed manufactured manufacturers ntz system

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Why have the major engine manufacturers not installed the NTZ filter system as the engine is manufactured?

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There are two basic reasons: First, adding aftermarket products as factory equipment drives up the price of the products. Secondly, the manufacturers have planned obsolescence built into the engines to enable them to keep selling replacement parts and engines to you the consumer.